Dynamically calling EJBs
Hello,
I'm reasonably new to working with EJBs so perhaps this isnt possible... Can you dynamically call an EJB at runtime ie like reflection.
I know once the bean has been created I can use reflection to call the method but how can I create the bean from the beans remote home interface?
Many thanks
Michael
Got it
EJBMetaData md = theHome.getEJBMetaData();
Class homeClass = md.getHomeInterfaceClass();
EJBObject theRemote = (EJBObject)invoke(homeClass,theHome,"create");
static Object invoke(Class c,Object obj,String mname){
Method[] methods = c.getMethods();
String name=null;
Object r= null;
try {
for(int i = 0; i<methods.length ;i++) {
name = methods.getName();
if(name.startsWith(mname)) {
r = methods[i].invoke(obj,null);
} catch(Exception e){
e.printStackTrace();
return r;
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3. call to getCurrency fails with <b>NoSuchMethodException</b>:
xxx.XXXObjectImpl0.getCurrency(java.lang.String, xxx.Version, int)
at java.lang.Class.getMethod(Class.java:986)
at com.sap.engine.services.rmi_p4.reflect.LocalInvocationHandler.invokeInternal(LocalInvocationHandler.java:51)
at com.sap.engine.services.rmi_p4.reflect.AbstractInvocationHandler.invoke(AbstractInvocationHandler.java:53)
at $Proxy346.getCurrency(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at com.sap.engine.services.ejb.session.stateless_sp5.ObjectStubProxyImpl.invoke(ObjectStubProxyImpl.java:187)
at $Proxy347.getCurrency(Unknown Source)
at xxx.XXX.getCurrencyWrapper(XXXXX.java:24)
How can I set dependencies to get this running?
Thanks to all
VolkerHi,
Is it available in the interface you are using..
If the answer is yes.. you might have probably forgotten to deploy the EJBs ear file after making the changes..
Rebuild it.. and deploy the EJB s ear file again..
It will solve the problem.. If that also does not work,it might be a problem with the cache.. restart the server..
It should work now !
Regards
Bharathwaj -
Upgrade : Issue with Specical character being used in 4.6C ( Dynamic calls)
Hi ,
We are working on Upgrade from 4.6C to ECC6.0 . in SPAU phase we are facing an issue :
When we are trying to see the variants from the program, it says that the program contains Syntax Error
"In Unicode programs, the "&" character can not appear in names as it does here in the name 'op&xv0' "
The 'op&xv0' is a form. we tried changing the form name, but couldnt get the PERFORM stmt for the form and it might be a dynamic call. what can we do for this type of programs?
Please also suggest how we can identify the places where that particular Subroutine is being called.
Thanks & Regds
TejaThis is probably an operation defined in Tcode PE04. You can change the operation subroutine name and then modify the code accordingly in the report.
Go to PE04 and put in operation name, suposedly &xv0.
Instead of using standard name suggested by SAP use custom name (for example opYvx0) and then change in the report as well and it should be ok. -
How to Call EJB from coldfusion
I need to call EJB that's created in JBoss from coldfusion.
I'm getting different errors depending on how I set the home object
and provider url.
If I prefix provider url with jnp://, then I get the
following error
The connection to the remote JNDI server on host jnp at port
1099 has failed (as have all backup hosts listed, if any) - please
verify that the server is running and the NamingService is
available
If I take the jnp out and keep just the ip address and port,
then i get the following error
null (no security manager: RMI class loader disabled).
So I'm not sure what the issue is and I haven't used this
feature before.
Here's my codeI tries to call custom EJBfrom custom component received
follwong error
ERROR [STDERR] javax.naming.CommunicationException [Root exception is java.lang.ClassNotFoundException:
No ClassLoaders found for: com.mycom.myapp.action.interfaces.pm.ejb.PmFacadeRemote
(no security manager: RMI class loader disabled)]
any idea?
Thanks
YogLC -
How can I call EJB from JSP/Servlets in iWS?
Hi!!
My JSP/Servlets are on iWS, and I deploy EJB on iAS.
In this case, I don't know how JSP/Servlet call EJb on iAS.
I'd like to know how I can set JNDI name in JSP/Servlet on iWS.
I will thank you if you give me a simple example source using JSP/Servlet
and EJB.
Thanks in advance!!!
- Park-Park,
Why Are you running your JSP/Servlets in iWS instead of iAS? For whatever
reason,
look at the Converter sample from iAS. You will be doing RMI/IIOP in this
case and the sample explains in detail what to do.
hth,
-robert
"SungHyun, Park" <[email protected]> wrote in message
news:9jpfmt$[email protected]..
Hi!!
My JSP/Servlets are on iWS, and I deploy EJB on iAS.
In this case, I don't know how JSP/Servlet call EJb on iAS.
I'd like to know how I can set JNDI name in JSP/Servlet on iWS.
I will thank you if you give me a simple example source using JSP/Servlet
and EJB.
Thanks in advance!!!
- Park-
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